“It’s much softer than most of the meat you would see in the market,” says the doctor in the video.

Did you ever wonder why a bony cage guards the human brain? That’s because the all-important control centre of the body is extremely soft and can be damaged by a thumb.

Biology lessons and human anatomy illustrations show that the brain appears like a pink walnut, but a video of a scientist describing the various parts of the organ reveals it is extremely delicate.

The video of the freshly removed brain uploaded by Medical Videos shows the doctor running her fingers through the organ as she explains its anatomy. “It’s much softer than most of the meat you would see in the market,” she says, explaining that the brain is so “vulnerable” that it can be damaged with a thumb.